Hi Jeff: Defer to gcc-12 is OK to me, we could hold this on downstream :)
On Wed, Dec 2, 2020 at 1:27 PM Jeff Law <l...@redhat.com> wrote: > > > On 12/1/20 2:29 AM, Kito Cheng wrote: > > Create a new hook to let target could override the multi-lib result, > > the motivation is RISC-V might have very complicated multi-lib re-use > > rule*, which is hard to maintain and use current multi-lib scripts, > > we even hit the "argument list too long" error when we tried to add more > > multi-lib reuse rule. > > > > So I think it would be great to have a target specific way to determine > > the multi-lib re-use rule, then we could write those rule in C, instead > > of expand every possible case in MULTILIB_REUSE. > > > > * Here is an example for RISC-V multi-lib rules: > > https://gist.github.com/kito-cheng/0289cd42d9a756382e5afeb77b42b73b > > > > gcc/ChangeLog: > > > > * common/common-target.def (compute_multilib): New. > > * common/common-targhooks.c (default_compute_multilib): New. > > * doc/tm.texi.in (TARGET_COMPUTE_MULTILIB): New. > > * doc/tm.texi: Regen. > > * gcc.c: Include common/common-target.h. > > (set_multilib_dir) Call targetm_common.compute_multilib. > > (SWITCH_LIVE): Move to opts.h. > > (SWITCH_FALSE): Ditto. > > (SWITCH_IGNORE): Ditto. > > (SWITCH_IGNORE_PERMANENTLY): Ditto. > > (SWITCH_KEEP_FOR_GCC): Ditto. > > (struct switchstr): Ditto. > > * opts.h (SWITCH_LIVE): Move from gcc.c. > > (SWITCH_FALSE): Ditto. > > (SWITCH_IGNORE): Ditto. > > (SWITCH_IGNORE_PERMANENTLY): Ditto. > > (SWITCH_KEEP_FOR_GCC): Ditto. > > (struct switchstr): Ditto. > Can this defer to gcc-12? We're well into stage3 at this point. > > jeff > >
